- To determine the correlation between event-free survival (EFS) and the following measures of minimal-residual disease (MRD)/early response (ER): 1) the rate of peripheral blast count disappearance and the absolute blast count on day 8 as determined morphologically, by flow cytometry, and using molecular techniques; 2) Marrow morphology on day 8, and; 3) MRD as determined by flow cytometry and molecular techniques on bone marrow and peripheral blood samples on day 29. (Induction therapy)